Results 31 to 40 of about 43,764 (236)

Changes in Dissolved Organic Matter (DOM) Fluorescence in Proglacial Antarctic Streams [PDF]

open access: yesArctic, Antarctic, and Alpine Research, 2013
Abstract Dissolved organic matter (DOM) exported in glacier meltwater influences downstream biogeochemical processes, and climate warming may increase the meltwater DOM flux. In this study, we quantify and use fluorescence spectroscopy and parallel factor analysis (PARAFAC) to characterize DOM exported in glacier meltwater in Taylor and Wright Valleys,
J. D. Barker   +3 more
openaire   +1 more source

Optical properties and bioavailability of dissolved organic matter along a flow-path continuum from soil pore waters to the Kolyma River mainstem, East Siberia [PDF]

open access: yes, 2016
The Kolyma River in northeast Siberia is among the six largest Arctic rivers and drains a region underlain by vast deposits of Holocene-aged peat and Pleistocene-aged loess known as yedoma, most of which is currently stored in ice-rich permafrost ...
Frey, Karen   +3 more
core   +7 more sources

What can we learn from amino acids about oceanic organic matter cycling and degradation? [PDF]

open access: yesBiogeosciences, 2022
Amino acids (AAs) mainly bound in proteins are major constituents of living biomass and non-living organic material in the oceanic particulate and dissolved organic matter pool. Uptake and cycling by heterotrophic organisms lead to characteristic changes
B. Gaye   +7 more
doaj   +1 more source

Factors controlling the distribution of dissolved organic carbon and nitrogen in the coastal waters off Jeju Island

open access: yesFrontiers in Marine Science, 2023
The composition of dissolved organic matter (DOM) in the coastal waters off Jeju Island, Korea, originates from a complex mixture of organic sources. This study examined the dynamics and sources of dissolved organic carbon (DOC) and dissolved organic ...
Young Kyoung Song   +4 more
doaj   +1 more source

Fluorescence spectroscopy applied to the optimisation of a desalting step by electrodialysis for the characterisation of marine organic matter [PDF]

open access: yes, 2008
The isolation and characterisation of marine dissolved organic matter (DOM) are still not readily achieved today. The study of this chemically complex material is particularly difficult, especially as it is hindered by the high salinity of seawater.
Huguet, Arnaud   +2 more
core   +3 more sources

Analytical dataset on the molecular compositional changes of dissolved organic matter during hyperthermophilic composting

open access: yesData in Brief, 2019
The aim of this research work was to determine the molecular compositional changes of dissolved organic matter (DOM) taken from different phases of the hyperthermophilic composting (HTC) process. The DOM samples were extracted by the standard protocol of
Zhen Yu   +5 more
doaj   +1 more source

The Composition of Dissolved Organic Matter in Arable Lands: Does Soil Management Practice Matter?

open access: yesAgronomy, 2022
Dissolved organic matter (DOM) is a key soil quality property, indicative of the organic matter stored in the soil, which may also be a function of temporal variation.
Thulfiqar Al-Graiti   +9 more
doaj   +1 more source

Using network analysis to discern compositional patterns in ultrahigh resolution mass spectrometry data of dissolved organic matter [PDF]

open access: yes, 2016
Author Posting. © The Author(s), 2016. This is the author's version of the work. It is posted here by permission of John Wiley & Sons for personal use, not for redistribution.
Kujawinski, Elizabeth B.   +1 more
core   +1 more source

Selective incorporation of dissolved organic matter (DOM) during sea ice formation [PDF]

open access: yesMarine Chemistry, 2013
article i nfo This study investigated the incorporation of DOM from seawater into b2 day-old sea ice in tanks filled with seawater alone or amended with DOM extracted from the microalga, Chlorella vulgaris. Optical properties, including chromophoric DOM (CDOM) absorption and fluorescence, as well as concentrations of dissolved organic carbon (DOC ...
Müller, Susann   +8 more
openaire   +5 more sources

Epiphytic Bacteria Are Essential for the Production and Transformation of Algae-Derived Carboxyl-Rich Alicyclic Molecule (CRAM)-like DOM

open access: yesMicrobiology Spectrum, 2021
The microbial carbon pump (MCP) provides a mechanistic illustration of transformation of recalcitrant dissolved organic matter (DOM) in the ocean. Here, we explored and demonstrated the key roles of algae-associated microorganisms (mainly heterotrophic ...
Yang Liu   +6 more
doaj   +1 more source

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